'use strict';
const path = require('path');
const defaultSettings = require('./src/settings.js');
const proxyTarget = require('./src/proxy.env.js');
const LodashModuleReplacementPlugin = require('lodash-webpack-plugin');

function resolve(dir) {
  return path.join(__dirname, dir);
}

const name = defaultSettings.title || 'vue Admin Creator'; // page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following methods:
// port = 9528 npm run dev OR npm run dev --port = 9528
const port = process.env.port || process.env.npm_config_port || 3000; // dev port

const isDev = process.env.NODE_ENV === 'development';
const clientName = process.env.CLIENT_NAME;
// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: './',
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: isDev,
  productionSourceMap: isDev,
  devServer: {
    host: '127.0.0.1',
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true
    },
    proxy: {
      '/': {
        // timeout: 30000,
        // target: 'http://10.138.17.56:8001', // proxyTarget[clientName], // 测试环境
        target: proxyTarget[clientName], // 测试环境
        secure: false, // 如果是https，需要配置此参数
        changeOrigin: true // 跨域需要配置
        // pathRewrite: { '/dev-api': '' }
      }
    }
    // before: require('./mock/mock-server.js') // 开启mock server
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    devtool: isDev ? 'source-map' : undefined,
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
  },
  chainWebpack(config) {
    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin('preload').tap(() => [
      {
        rel: 'preload',
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: 'initial'
      }
    ]);

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete('prefetch');

    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/icons'))
      .end();
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end();
    config
      .when(
        process.env.NODE_ENV !== 'development',
        config => {
          config.plugin('loadshReplace').use(new LodashModuleReplacementPlugin());
          config
            .plugin('ScriptExtHtmlWebpackPlugin')
            .after('html')
            .use('script-ext-html-webpack-plugin', [{
              // `runtime` must same as runtimeChunk name. default is `runtime`
              inline: /runtime\..*\.js$/
            }])
            .end();
          config
            .optimization.splitChunks({
              chunks: 'all',
              cacheGroups: {
                libs: {
                  name: 'chunk-libs',
                  test: /[\\/]node_modules[\\/]/,
                  priority: 10,
                  chunks: 'initial' // only package third parties that are initially dependent
                },
                elementUI: {
                  name: 'chunk-elementUI', // split elementUI into a single package
                  priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                  test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                },
                commons: {
                  name: 'chunk-commons',
                  test: resolve('src/components'), // can customize your rules
                  minChunks: 3, //  minimum common number
                  priority: 5,
                  reuseExistingChunk: true
                }
              }
            });
          // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
          config.optimization.runtimeChunk('single');
        }
      );
  },
  css: {
    loaderOptions: {
      less: {
        lessOptions: {
          javascriptEnabled: true
        }
      }
      // postcss: {
      //   plugins: [
      //     require('postcss-px-to-viewport')({
      //       unitToConvert: 'px',
      //       viewportWidth: 1920,
      //       unitPrecision: 3,
      //       propList: [
      //         '*'
      //       ],
      //       viewportUnit: 'vw',
      //       fontViewportUnit: 'vw',
      //       selectorBlackList: [],
      //       minPixelValue: 1,
      //       mediaQuery: false,
      //       replace: true,
      //       exclude: /(\/|\\)(node_modules)(\/|\\)/
      //     })
      //   ]
      // }
    }
  }
};
